Cho sơ đồ chuyển hóa sau: $\begin{gathered} (1)\,{C_4}{H_6}{O_2}(M) + NaOH\xrightarrow{{{t^0}}}(A) + (B) \hfill \\ (2)\,(B) + AgN{O_3} + N{H_3}

Cho sơ đồ chuyển hóa sau:
$\begin{gathered}
(1)\,{C_4}{H_6}{O_2}(M) + NaOH\xrightarrow{{{t^0}}}(A) + (B) \hfill \\
(2)\,(B) + AgN{O_3} + N{H_3} + {H_2}O\xrightarrow{{{t^0}}}(F) + Ag \downarrow + N{H_4}N{O_3} \hfill \\
(3)(F) + NaOH\xrightarrow{{{t^0}}}(A) + N{H_3} \uparrow + {H_2}O \hfill \\
\end{gathered} $
Chất M là:
A HCOO(CH₂)=CH₂
B CH₃COOCH=CH₂
C HCOOCH=CHCH₃
D CH₂=CHCOOCH₃

Chọn đáp án là: B
Lời giải chi tiết:
- Các phản ứng xảy ra:
\(\begin{gathered}
(1)\,C{H_3}COOH = C{H_2}(M) + NaOH\xrightarrow{{{t^0}}}C{H_3}COONa(A) + C{H_3}CHO(B) \hfill \\
(2)\,C{H_3}CHO(B) + AgN{O_3} + N{H_3}\xrightarrow{{{t^0}}}C{H_3}COON{H_4}(F) + Ag \downarrow + N{H_4}N{O_3} \hfill \\
(3)C{H_3}COON{H_4}(F) + NaOH\xrightarrow{{{t^0}}}C{H_3}COONa(A) + N{H_3} + {H_2}O \hfill \\
\end{gathered} \)
Đáp án B